Delegates to the 2019 World Radiocommunication Conference (WRC-19) in Egypt have reached a compromise on an out-of-band-emission (OOBE) limit in the 24 gigahertz band to protect passive weather satellites in adjacent spectrum, according to Grace Koh, the head of the U.S. delegation to the WRC-19. The conference, which opened Oct. 28, ends tomorrow.
Under the compromise, member states will face an unwanted emission limit of -33 dBW/200 megahertz for 5G base stations until 2027, which then switches to -39 dBW/200 MHz. The agenda 1.13 item addresses the broader 26 GHz band, which includes the 24 GHz band. It was among the highest profile items at the conference.
Some members of Congress, the National Oceanic and Atmospheric Administration, and the National Aeronautical and Space Administration have complained that the -20 dBW/200 MHz OOBE limit for the 24 GHz band adopted by the FCC would not adequately protect passive weather satellites in the adjacent 23.6-24 GHz band.
The U.S. and 16 other members of CITEL (the Inter-American Telecommunications Commission) proposed an OOBE limit of -28 dBW/200 MHz for the 24 GHz.
Going into the WRC-19, of the six regional groups, three – CITEL and groups of African and Arab nations – supported OOBE limits that were in the less-restrictive end of the range; two – which included former Soviet Union nations and Europe – backed much stricter restrictions; and Asian nations had yet to take a position, the speakers said. —Paul Kirby, [email protected]
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